Can't mount USB drive in Tumbleweed KDE while it is successfully mounts on my Kubuntu 20.04 Laptop. Dolphin prints error: > Error mounting /dev/sdd1 at /run/media/user/TRANSCEND: > The function 'bd_fs_mount' called, but not implemented! Problem is fully described here: https://forums.opensuse.org/showthread.php/563878-Can-t-mount-USB-drive
This isn't a KDE issue; it would be caused by some subsystem below us. From that thread, it looks like there are suspicious changes in a USB disk handling package.
Seems solved after recent updates.